Abstract
Decentralized anaerobic fluidized bed membrane bioreactor (AFMBR) systems with energy recovery have been proposed for greywater recycling in domestic buildings for non-potable uses, such as toilet flushing. This study developed an eco-efficiency analysis (EEA) framework with the integration of life-cycle assessment (LCA) and economic analysis for the evaluation of different water systems. Four water management scenarios including (1) freshwater flushing system, (2) seawater flushing system, (3) greywater flushing system adopting aerobic membrane bioreactor (MBR), and (4) greywater flushing system adopting AFMBR, were analyzed in a case study in Hong Kong. The EEA results reveal the AFMBR greywater reuse scenario to be the most eco-efficient option as the system is capable of energy recovery, recycling of water resource and reduction of sewage treatment loadings. This study has demonstrated that the EEA framework is an effective tool to guide water management towards sustainability and provides a basis for further research on the application of greywater recycling systems on a larger scale.
| Original language | English |
|---|---|
| Pages (from-to) | 293-307 |
| Number of pages | 15 |
| Journal | Applied Energy |
| Volume | 202 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 6 Clean Water and Sanitation -
SDG 7 Affordable and Clean Energy -
SDG 12 Responsible Consumption and Production -
SDG 13 Climate Action
Keywords
- Decentralized AFMBR
- Eco-efficiency analysis
- Energy recovery
- Greywater reuse
ASJC Scopus subject areas
- Building and Construction
- General Energy
- Mechanical Engineering
- Management, Monitoring, Policy and Law
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